10' x 16' Canvas Tarp 12oz/18oz Dark Brown with Grommets Approximate finish size is 9'6" x 15'6" due to hems, seams. Weather may cause canvas to shrink. 100% single-filled duck canvas, industrial-rated. Treated with Canvak, the highest quality treatment available. Water-repellent, mildew-resistant. 12oz per square yard before treatment and 18oz per square yard after treatment. Rustproof coated brass grommets every 3-4 feet along all sides.